Bio101r4 fruit flies lab week2 1

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Bio101r4 fruit flies lab week2 1

Mendel's Law Lab: Genetics & Fruit flies - SchoolWorkHelper

The most diverse and significant bacteria community is located in the intestines. It is believed that the manipulation of the microbiota can contribute to treating some diseases. However, to enable it, it is necessary to understand the range of bacteria and how they colonize the intestine.

Research in this field has used model organisms, namely mice and fruit flies, which also benefit from this association with bacteria. Now, a study published in PLoS Biology offers a new tool to study this bacteria -host interaction. A research team from the Gulbenkian Institute of Science IGC revealed how the bacterial community colonizes the fruit flies in the lab or in the wild, and the impact of this colonization in nature.

Understanding these mechanisms of colonization may allow microbiota manipulation in agricultural pests or disease vectors like mosquitos. Until recently, it was assumed that the fruit fly Drosophila melanogaster did not have a stable bacterial community in its intestine.

Gut bacteria would need to be continuously ingested with food. But there are differences between flies kept in the laboratory and from the wild. Laboratory flies—globally used in research studies—are associated with bacteria not able to colonize the intestine.

The IGC team discovered a very different situation related to wild flies. They showed that bacteria associated with wild flies have a much higher colonization capability. By focusing on one of these bacteria, the researchers showed that a stable and continuous colonization of the intestine causes a constant transfer of bacteria to the environment, benefiting the following generation.

Doing so, the next generation of flies will obtain all the benefits related to these bacteria for their development and fertility," explains Ines Pais.

Bio101r4 fruit flies lab week2 1

Also, it is relatively easy to produce fruit flies without any bacteria, which facilitates the study of colonization. Since similar biological mechanisms exist between the fruit fly and humans, we think that there are many lessons that we can learn from the fly.

Humans live in permanent contact with a huge community of microorganisms, including bacteria, viruses, and fungi. The biggest and most diverse bacteria community in terms of bacteria species is located in the intestine.

In normal conditions, the microbiota is in balance, providing benefits to the host organism. Our bacteria promote the correct development of our body, the breakdown of nutrients and protect against some pathogens, which can, for example, cause intestinal infections.

However, when this balance is disturbed for example, by using antibioticsthe microbiota species may change. The organism passes through a dysbiosis condition, in which the community may become harmful to health.Related Documents: Essay about bior4 Fruit Flies Lab Week2 1 lab 1 Essay Due 09/28/ Abstract: In this lab assignment the different microorganisms were observed at different magnifications.

What Can Fruit Flies Reveal about Inheritance? Lab Notebook. Chi-Square test for Case 1.

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Phenotype Observed No. (o) Expected No. (e) (o-e) (o-e) 2 (o-e) 2. e Red eyes. Sepia eyes (2 (to the nearest ten-thousandth) Questions. 1. Why is it important to remove the adults in the parental generation?

2. What generation will their offspring be? 3. Regarding why fruit flies were used to study the way that bacteria colonize the intestine, Luís Teixeira says: "The bacterial community in fruit flies is much smaller and simpler than in mammals.

Also, it is relatively easy to produce fruit flies without any bacteria, which facilitates the study of colonization. Complete the "What Can Fruit Flies Reveal About Inheritance? Lab" worksheet by taking notes from the investigation and answering the questions associated with the investigation. View Lab Report - bior4_Fruit_Flies_Lab_Week2 (1) revised from PSY at University of Phoenix. or sex–linked? Explain. Sex-linked the pattern of inheritance is not the same for males and. Find the probability (p) value for 1 degree of freedom in the row.

Compare this with the chi–square value you calculated in your Lab .

Fruit Fly Investigation